Im asking if the irony jp is meant to spin on its very center like the horizon or grind on the edge of the flat area like everything else with a flat hub. I dont get the point of a ‘very slightly concave’ hub.
Im asking if the irony jp is meant to spin on its very center like the horizon or grind on the edge of the flat area like everything else with a flat hub. I dont get the point of a ‘very slightly concave’ hub.